This name is a synonym of Sedum tortuosum Hemsl..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 8902380) with original publication details: Acta Horti Gothob. 10(App.): 36 1935.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:275617-1.
This name was in version 1 of The Plant List, record tro-8902380.